Brush.



No. 758,063. 1 ATENTED APR. ze, 1904.

o. GRNEBERG.

BRUSH.

APPLICATION FILED JUNE 3. 1903.

N0 MODEL.'

UNITED STATES Patented April 26, 1904.

PATENT CEEICE.

BRUSH.

SPECIFICATION forming part of Letters Patent No. 758,063, dated April 26, 1904.

` Application ile` June 3, 1903. Serial No. 159,939. (No model.)

To all whom t may concern.'

Be it known that I, CARL GRNEBERG, a subject of the Emperor of Austria-Hungary, residing at Pozsony, (Pressburg,) Austria-Hungary, have invented certain new and useful Improvements in Brushes, of which the following is a specification.

The present invention has reference to improvements in brushes, and relates more especially to means for securing the anchors which retain the bristle-tufts within the brush back or plate, particularly in brushes made by the drawing-in machines of the so-ealled Gane type. The tufts or bunches of bristles drawn into the vertical holes drilled in the back of the brush-plate are now secured therein by anchors consisting of pieces of metal held within the holes merely by frictional contact; but since the material of the brush-plate is generally hardwood, bone, ivory, o1' the like hard and smooth material the friction between the anchors and the wall of the tuft-holes is often insuflicient to withstand the strain put upon the bristles, and as a result the anchors, with the tufts, work loose and drop out.

The present invention has for its object to obviate this disadvantage and provide means for securely attaching and retaining the anchors in the brush-plate.

In order to make the invention more readily understood, it will now be described with reference to the accompanying sheet of drawings, Figure l of which represents a sectional elevation of a brush provided with the improvements. Fig. 2 1s a plan View thereof,

partly in section. Figs. 3 and 4 show detail views, partly in section, on an enlarged scale. rIhe vertical holes b, drilled in the brushplate a, are in communication with parallel rows of horizontal holes c. In each hole o a tuft of bristles is secured by means of an anchor. This latter consists of a lower diagonal base part cl, adapted to bear against the inner circumference of the tuft-hole, as clearly shown in Figs. l and 3, and of two upwardlycurving elastic arms ff, which upon the tuft being inserted spread and enter the horizontal holes, and thereby secure the anchor against Working loose and becoming displaced.

What I claim, and desire to secure by Letters Patent, is-

l. A brush-back provided with vertical and horizontal communicating holes, and elastic tuft-retaining anchors adapted to be secured in said holes, substantially as specified.

2. A brush-back provided with parallel rows of vertical and horizontal .communicating holes. elastic tuft-retaining anchors comprising a base part adapted to fit tightly in the vertical holes, upwardly-curved armsv extending from the said base part and adapted to enter the horizontal holes, substantially as shown and described'.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

CARL GRUNEBERG.

Witnesses:

VINCENz DoMBos, STEFAN URL. 

